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Joined: Feb 2012
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worm Offline OP
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Guys I have been looking for 8 lbs of Hodgdon Retumbo with no luck. What's the next best powder for 300 Ultra Mag. Thanks

HR IC

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What weight bullet are you using? I loaded some 180 gr. AccuBonds with H1000 for a friend a couple years ago with overall good performance. It was a schit-load of power, mid 90s if I remember correctly.

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H 1000 is the Aussie AR 2217 and it is a terrific powder for the RUM. I used it exclusively in the late 90's and early 00's before Retumbo was introduced.

Rel 25 also works well.


When truth is ignored, it does not change an untruth from remaining a lie.
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worm Offline OP
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190 gr bullet. will try the H 1000. Thanks

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Ramshot Magnum !

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RL-33 should be da bomb

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Originally Posted by worm
Guys I have been looking for 8 lbs of Hodgdon Retumbo with no luck. What's the next best powder for 300 Ultra Mag. Thanks


Probably RL25

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WC872


You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.

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RL25 in mine.

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Cartridge : .300 Rem Ultra Mag
Bullet : .308, 190, Nosler AccuBond LR 58456 G7
Useable Case Capaci: 99.982 grain H2O = 6.492 cm�
Cartridge O.A.L. L6: 3.598 inch = 91.39 mm
Barrel Length : 26.0 inch = 660.4 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64855 psi, or 447 MPa
or a maximum loading ratio or filling of 110 %s
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

211 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ADI AR 2218 104.4 102.5 6.64 3194 99.9 64855 14632 1.255 ! Near Maximum !
Vihtavuori N570 100.2 97.3 6.31 3153 99.5 64855 14363 1.284 ! Near Maximum !
ReloadSwiss RS 80 103.0 103.0 6.67 3136 99.9 64855 13994 1.287 ! Near Maximum !
Alliant Reloder-33 100.5 101.8 6.60 3133 99.7 64855 14112 1.289 ! Near Maximum !
Alliant Reloder-50 106.1 105.8 6.85 3125 99.5 64855 14376 1.317 ! Near Maximum !
Hodgdon H870 106.2 101.0 6.55 3120 100.0 64855 13679 1.292 ! Near Maximum !
Norma 217 105.9 96.2 6.23 3097 100.0 64855 12706 1.302 ! Near Maximum !
ADI AR 2225 103.8 96.2 6.23 3096 100.0 64855 12376 1.278 ! Near Maximum !
Hodgdon Retumbo 103.8 96.2 6.23 3096 100.0 64855 12376 1.278 ! Near Maximum !
Vihtavuori N560 92.4 87.0 5.64 3093 100.0 64855 12874 1.275 ! Near Maximum !
Accurate MAGPRO 92.6 90.7 5.88 3087 99.9 64855 13076 1.285 ! Near Maximum !
Norma MRP 2 99.6 91.8 5.95 3081 100.0 64855 12692 1.292 ! Near Maximum !
Bofors RP30 99.6 91.8 5.95 3081 100.0 64855 12692 1.292 ! Near Maximum !
IMR 7828 96.6 86.5 5.61 3081 100.0 64855 12435 1.266 ! Near Maximum !
IMR 7828 SSC 91.4 86.5 5.61 3081 100.0 64855 12435 1.266 ! Near Maximum !
PB Clermont PCL 517 94.8 93.2 6.04 3077 100.0 64855 12468 1.281 ! Near Maximum !
SNPE Vectan SP 12 94.6 93.1 6.03 3076 100.0 64855 12439 1.281 ! Near Maximum !
ADI AR 2213 92.6 86.3 5.59 3073 100.0 64855 12381 1.261 ! Near Maximum !
Norma MRP 90.5 87.0 5.64 3070 100.0 64855 12296 1.286 ! Near Maximum !
Bofors 12,7mmRA NC1214 Lot20115087 106.8 104.1 6.74 3069 94.3 64855 14189 1.320 ! Near Maximum !
Hodgdon 50BMG 108.7 101.8 6.59 3066 92.9 64855 13815 1.279 ! Near Maximum !
ADI AP 2214 96.2 92.0 5.96 3066 100.0 64855 12108 1.264 ! Near Maximum !
Vihtavuori 24N41 103.3 101.5 6.57 3064 96.1 64855 13430 1.271 ! Near Maximum !
ADI AR 2217 101.1 92.2 5.97 3063 100.0 64855 12073 1.265 ! Near Maximum !
Hodgdon H1000 101.1 92.2 5.97 3063 100.0 64855 12073 1.265 ! Near Maximum !
Alliant Reloder-22 92.7 86.4 5.60 3059 100.0 64855 12235 1.281 ! Near Maximum !
Raufoss RA15 92.7 86.4 5.60 3059 100.0 64855 12235 1.281 ! Near Maximum !
Bofors RP5/NP ~approximation 92.7 86.4 5.60 3059 100.0 64855 12235 1.281 ! Near Maximum !
Bofors RP15 95.2 86.8 5.63 3058 100.0 64855 12256 1.281 ! Near Maximum !
Winchester WXR 95.2 86.8 5.63 3058 100.0 64855 12256 1.281 ! Near Maximum !
Alliant Reloder-25 97.4 89.3 5.79 3054 100.0 64855 11813 1.283 ! Near Maximum !
Bofors RP5 NT ~approximation 96.3 90.5 5.86 3051 99.9 64855 12457 1.263 ! Near Maximum !
Hodgdon US 869 108.3 106.3 6.89 3050 96.2 64855 13415 1.288 ! Near Maximum !
Rottweil R905 94.2 86.2 5.58 3044 100.0 64855 12155 1.277 ! Near Maximum !
Accurate 8700 110.0 105.8 6.86 3041 99.2 62981 12969 1.298 ! Near Maximum !
Vihtavuori 20N29 110.0 109.1 7.07 3039 97.9 63273 13414 1.314 ! Near Maximum !
ADI AR 2209 90.1 82.6 5.35 3033 100.0 64855 11739 1.262 ! Near Maximum !
SNPE Vectan SP 13 110.0 103.6 6.71 3033 99.1 64001 12940 1.305 ! Near Maximum !
Alliant Reloder-19 90.5 83.4 5.41 3029 100.0 64855 11778 1.269 ! Near Maximum !
Ramshot Magnum 92.3 92.7 6.01 3023 100.0 64855 11590 1.288 ! Near Maximum !
Bofors RP14 ~approximation 91.2 84.1 5.45 3022 100.0 64855 11694 1.270 ! Near Maximum !
Hodgdon H4831 SC 91.9 85.6 5.55 3019 100.0 64855 11831 1.267 ! Near Maximum !
Hodgdon H4831 95.6 85.6 5.55 3019 100.0 64855 11831 1.267 ! Near Maximum !
Vihtavuori N170 104.2 95.0 6.15 3013 98.7 64855 12500 1.293 ! Near Maximum !
Rottweil R904 90.1 81.9 5.30 2996 100.0 64855 11398 1.265 ! Near Maximum !
Lovex D100 101.2 100.4 6.50 2992 96.5 64855 12411 1.286 ! Near Maximum !
Somchem S385 90.6 84.4 5.47 2984 100.0 64855 11181 1.291 ! Near Maximum !
PB Clermont PCL 513/520/9520 110.0 103.6 6.71 2978 97.8 60028 12940 1.341 ! Near Maximum !
Vihtavuori N160 96.1 84.9 5.50 2976 100.0 64855 11166 1.271 ! Near Maximum !
Vihtavuori N165 95.5 87.0 5.64 2969 100.0 64855 10934 1.285 ! Near Maximum !
IMR 4831 90.2 79.6 5.16 2959 100.0 64855 10642 1.292 ! Near Maximum !
Accurate 3100 93.1 85.8 5.56 2955 100.0 64855 10788 1.311 ! Near Maximum !
Lovex S071 98.4 85.8 5.56 2955 100.0 64855 10788 1.311 ! Near Maximum !
NC A3502 ,test only 110.0 99.2 6.43 2785 81.3 49406 12579 1.423
TLP A 502(RH) ,test only 110.0 99.2 6.43 2743 81.9 47558 12032 1.460
Vihtavuori N32C Tin Star 99.2 45.6 2.96 2240 100.0 64855 4951 1.319 ! Near Maximum !
V1734 7-multiperf ,test only 110.0 99.2 6.43 1968 40.4 24920 6271 1.965
IMR TrailBoss 110.0 34.2 2.21 1937 100.0 42409 3901 1.583
ADI AS 25 BP 110.0 34.2 2.21 1937 100.0 42409 3901 1.583



Cartridge : .300 Rem Ultra Mag
Bullet : .308, 190, Hornady BTSP 3085
Useable Case Capaci: 101.268 grain H2O = 6.575 cm�
Cartridge O.A.L. L6: 3.598 inch = 91.39 mm
Barrel Length : 26.0 inch = 660.4 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64855 psi, or 447 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

214 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
ADI AR 2218 104.0 103.4 6.70 3195 99.9 64855 14775 1.256 ! Near Maximum !
Vihtavuori N570 99.7 98.1 6.36 3154 99.5 64855 14504 1.284 ! Near Maximum !
ReloadSwiss RS 80 102.5 103.8 6.73 3136 99.9 64855 14128 1.288 ! Near Maximum !
Alliant Reloder-33 100.0 102.6 6.65 3133 99.7 64855 14248 1.291 ! Near Maximum !
Alliant Reloder-50 105.5 106.6 6.91 3125 99.5 64855 14515 1.318 ! Near Maximum !
Hodgdon H870 105.6 101.8 6.60 3120 100.0 64855 13808 1.293 ! Near Maximum !
Norma 217 105.4 96.9 6.28 3097 100.0 64855 12827 1.303 ! Near Maximum !
ADI AR 2225 103.3 96.9 6.28 3096 100.0 64855 12494 1.279 ! Near Maximum !
Hodgdon Retumbo 103.3 96.9 6.28 3096 100.0 64855 12494 1.279 ! Near Maximum !
Vihtavuori N560 92.0 87.7 5.68 3094 100.0 64855 12998 1.275 ! Near Maximum !
Accurate MAGPRO 92.1 91.4 5.92 3088 99.9 64855 13203 1.285 ! Near Maximum !
IMR 7828 SSC 91.0 87.2 5.65 3082 100.0 64855 12558 1.266 ! Near Maximum !
IMR 7828 96.1 87.2 5.65 3082 100.0 64855 12558 1.266 ! Near Maximum !
Norma MRP 2 99.1 92.5 6.00 3082 100.0 64855 12813 1.293 ! Near Maximum !
Bofors RP30 99.1 92.5 6.00 3082 100.0 64855 12813 1.293 ! Near Maximum !
PB Clermont PCL 517 94.3 94.0 6.09 3078 100.0 64855 12589 1.282 ! Near Maximum !
SNPE Vectan SP 12 94.2 93.8 6.08 3076 100.0 64855 12560 1.282 ! Near Maximum !
ADI AR 2213 92.2 87.0 5.64 3074 100.0 64855 12503 1.261 ! Near Maximum !
Norma MRP 90.0 87.7 5.68 3071 100.0 64855 12414 1.286 ! Near Maximum !
Bofors 12,7mmRA NC1214 Lot20115087 106.2 104.9 6.80 3070 94.5 64855 14343 1.320 ! Near Maximum !
Hodgdon 50BMG 108.3 102.6 6.65 3068 93.1 64855 13974 1.279 ! Near Maximum !
Vihtavuori 24N41 102.9 102.3 6.63 3067 96.2 64855 13579 1.272 ! Near Maximum !
ADI AP 2214 95.7 92.7 6.01 3067 100.0 64855 12228 1.265 ! Near Maximum !
ADI AR 2217 100.6 92.9 6.02 3064 100.0 64855 12193 1.265 ! Near Maximum !
Hodgdon H1000 100.6 92.9 6.02 3064 100.0 64855 12193 1.265 ! Near Maximum !
Accurate 8700 110.0 107.2 6.94 3060 99.4 64291 13130 1.288 ! Near Maximum !
Alliant Reloder-22 92.3 87.1 5.64 3060 100.0 64855 12354 1.281 ! Near Maximum !
Raufoss RA15 92.3 87.1 5.64 3060 100.0 64855 12354 1.281 ! Near Maximum !
Bofors RP5/NP ~approximation 92.3 87.1 5.64 3060 100.0 64855 12354 1.281 ! Near Maximum !
Bofors RP15 94.8 87.5 5.67 3059 100.0 64855 12375 1.281 ! Near Maximum !
Winchester WXR 94.8 87.5 5.67 3059 100.0 64855 12375 1.281 ! Near Maximum !
Vihtavuori 20N29 110.0 110.5 7.16 3058 98.1 64583 13599 1.303 ! Near Maximum !
Alliant Reloder-25 97.0 90.0 5.83 3054 100.0 64855 11927 1.283 ! Near Maximum !
Bofors RP5 NT ~approximation 95.9 91.2 5.91 3052 99.9 64855 12581 1.263 ! Near Maximum !
Hodgdon US 869 107.8 107.2 6.95 3052 96.3 64855 13562 1.288 ! Near Maximum !
SNPE Vectan SP 13 109.9 104.8 6.79 3046 99.2 64855 13098 1.297 ! Near Maximum !
Rottweil R905 93.8 86.9 5.63 3046 100.0 64855 12276 1.277 ! Near Maximum !
Alliant Reloder-19 90.1 84.1 5.45 3031 100.0 64855 11895 1.269 ! Near Maximum !
Ramshot Magnum 91.9 93.4 6.06 3024 100.0 64855 11705 1.289 ! Near Maximum !
Bofors RP14 ~approximation 90.8 84.8 5.49 3024 100.0 64855 11810 1.270 ! Near Maximum !
Hodgdon H4831 95.2 86.3 5.60 3021 100.0 64855 11949 1.267 ! Near Maximum !
Hodgdon H4831 SC 91.5 86.3 5.60 3021 100.0 64855 11949 1.267 ! Near Maximum !
Vihtavuori N170 103.7 95.8 6.21 3015 98.7 64855 12633 1.293 ! Near Maximum !
PB Clermont PCL 513/520/9520 110.0 104.9 6.80 2996 98.1 61161 13120 1.331 ! Near Maximum !
Lovex D100 100.8 101.2 6.56 2995 96.6 64855 12551 1.286 ! Near Maximum !
Somchem S385 90.2 85.1 5.52 2986 100.0 64855 11294 1.290 ! Near Maximum !
Vihtavuori N160 95.7 85.6 5.55 2978 100.0 64855 11280 1.270 ! Near Maximum !
Vihtavuori N165 95.0 87.8 5.69 2971 100.0 64855 11045 1.284 ! Near Maximum !
Accurate 3100 92.6 86.5 5.60 2956 100.0 64855 10897 1.311 ! Near Maximum !
Lovex S071 98.0 86.5 5.60 2956 100.0 64855 10897 1.311 ! Near Maximum !
NC A3502 ,test only 110.0 100.5 6.51 2806 82.2 50129 12892 1.412
TLP A 502(RH) ,test only 110.0 100.5 6.51 2763 82.5 48324 12266 1.449
Vihtavuori N32C Tin Star 99.1 46.2 2.99 2246 100.0 64855 5025 1.314 ! Near Maximum !
V1734 7-multiperf ,test only 110.0 100.5 6.51 1984 40.9 25264 6432 1.953
ADI AS 25 BP 110.0 34.6 2.24 1943 100.0 42453 3961 1.576
IMR TrailBoss 110.0 34.6 2.24 1943 100.0 42453 3961 1.576







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Loaded RL-22 in mine for years and it works perfect for me on 180 grain bullets. RL-25 for 200 grain stuff. Just about perfect....


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worm Offline OP
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Posts: 97
Great information. Thanks


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